Which one of the following elements is unable to form MF6^3- ion ?

NEET UG 2018 · Chemistry · Question 47

NEET 2018 Chemistry, question 47

Question 47 of the NEET 2018 paper (code AA) is a Chemistry question from The p-Block Elements (Class 11). Its idea, Maximum Covalency of Boron, was asked twice, in 2018 and 2026, across NEET 2017–2026. The CBSE official answer key gives option 1.

Updated 2026-10-08

Q47 · Chemistry

\mathrm{MF_6^{3-}}

1 B Official answer 2 Al 3 Ga 4 In

Official answer: option 1 · CBSE official answer key

Same idea

Maximum Covalency of Boron, in other papers

NEET asked this idea twice, in 2018 and 2026. The other question below.

2026 Q 73 The correct statement is One-line MCQ \cdot Medium

Maximum Covalency of Boron: every question and how it was framed

The chapter

The p-Block Elements (Class 11) in ten years of NEET

13 questions from 2017–2026, asked in 7 of 10 papers, about 1.3 a paper. p-Block (Group 13-14) alone had 12.

Chapter analysis

Maximum Covalency of Boron, in other papers

The p-Block Elements (Class 11) in ten years of NEET

The p-Block Elements (Class 11): questions per paper